Improvement in draft-equalizers



PERKINS a; VANDERGRIFT.

- Draft Equalizer. No. 108,727. Patentd out. 25, 1879.

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WILLIAM .1 1. PERKINS AND THEODORE F. .VANDERGIFT, OF LA FON- TAINE, INDIANA.

Letters Patent No; 108,727, dated October 25, 1870.

IMPROVEMENT m DRAFT-EQUALIYZERS.

The Schedule referred to in these Letters Patent'and making part: of-the same.

erence marked thereon.

Figure 1 of the drawing is a top View" of our invention.

Figure 2 is a central horizontal section of the same.

Our invention relates to means for equalizing the draft of horses, and consists in the, arrangement of the pulleys, over whichI-the equalizing-strap, which connects the inner traces, passes, and the manner of pivoting the traces, to which the pulleys are attached,

to the whiffletree.

The letter A of the drawing represents the Whittletree B," the equalizing strap. connecting the outer traces; and

G, the equalizing-strap connecting the inner traces.

1) represents the plates, which protect the pulleys E,'and to which they are attached.

-In order'to lessen the jar and strain upon each pulley, I employ three, and pass the strap 0 about them in the manner shown.

The plates D are pivoted tothe whiflietrec, so that l they can turn freely to answer the strain upon that end ofrthe equalizing-strap to which the pulling horse isattached, thus, obviating the diificulty under which all center pulleys labor, of causing the forward-horse to pull against himself when they'are attached by rigid arms or plates to the whiffletree; in other words,

the-axial line of the combination of pulleys always maintains a position parallel to the line of draft in my improvement, whereas, if the pulleys -are attached by rigid arms, they constitutelevers, against the action of which the forward horse must pull.

What we claim as our invention, and desire to secure by Letters Patent, is p The combination and arrangement of the Whittletree A, pulleys E E E, equalizing-strap O, and pivoted plates D D, as specified. I

' In testimony that we claim the above, we have hereunto subscribed our names 1n the presence of two wit-- DBSSGS.

WM. M. PERKINS. T. F. VANDERGIFT.

Witnesses:

Just. A. 131.001),

WELLINGTON LINES. 

